1 & 3 I like, they are bright, like flowers are in the daylight, Tirediron stated "a little overexposed", I agree, but I wonder if you shot them again with a corrected exposure if they may lose the "pop". To me macro floral shots with bright brights and shadows are appealing. The dead leaves or blooms in 2 kinda ruined a great shot.
The shots themselves are very cool. I always have to ask myself, "aside from technical things is this picture cool?" interesting? etc. and yours are.
Great job